Truck bolster



Patented May 8, 1223.,-

STES

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EnwrN c. Wrisrrnunn, ornuernwoon, NEW JERSEY.

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Application tiled .Tune 24, 1921. Serial No. 480,158.

It is' an object of this invention to construct such a bolster of oppositely disposed standard channel members having their ends internotched and surrounded by coupling heads in which are cast metal fillers connecting said ends and'heads.

It is a 'further object of the invention to provide such a bolster having the ends of its tension and compression members welded together.

It is also an object of the invention to construct the compression member with a downwardly curved portion intermediate its ends and to connect such portions tothe tension member by a strut column connected to said members by metal fillers cast about the same: These and other objects and advantages of the invention will be fully set forth in the following description made in connection with the accompanying drawings in which like reference characters refer to the same parts throughout the different views, a'nd in which y Fig. l is a view in side lelevation of the bolster, the central portion and one end thereof being shown in section, partsl of the side frame beingalso shown; Fig.` 2 is a central vertical section of the bolster; Y

Fig. 3 is a top plan view of the central portion of' the bolster; and Fig. 4L is a ho'rizontal section taken on't'he line of Fi A. l. Y

eferring to the drawings, the bolster is shown as comprising the compression .member l and the tension member 2, 'both of which members are constructed' of standard channel beams having their flange portions directed inwardly or toward each other. In Fig. l, the sand plank' a with the spring plate rivetedthereto is also shown as well as to the bolster springs' Z) and the bearings 'and bearing platev for the bolster. thereabove.y

Bolster side'bearings c are also shown as disposed on the top of the bolster.

The flanges of the tension. member 2 are notched, as shown, at l and the flanges of the compression member l which member'is of shorter length than the member 2, areA correspondingly notched, as shown, so that the end of the flanges in the member 1 substantially abut the outer notch in the vmember 2 and the inner notches in the flanges are also substantially in abutting relation. The flanges of the members land 2 are thus superposed and internotched, and vthe contacting edges of these flanges extending from the endof the member l to the point 2, preferably are welded together. The members l and 2 thus form a rigid frame. Conf pling heads 3 are provided at the ends of the bolster which heads are hollow and have the ends of the members l and 2 disposed therein, the member 2 extending to the outer end of said head. The web portion of the member2 is yprovided adjacent its ends in the head 3 with spaced holes `2b and 2c and the coupling head 3 is provided'in its upper side with outwardly flaring holes aarranged in alinement with the holes 2b and 2. The web of the member l adjacent itsend is, likewise, arranged with holes in alinement with the holes 2c. The head 3 is further provided with recesses 3binv its bottom portion in alinement withy the' holes 2b an-d l2c of the member 2.' The coupling head is secured to the ends of the tension' and vcompression members by a cast metal filler poured into said head about the engagingends of'said members This cast filler does not fill the entire space between the webs ofthe members l and 2, but columns of this cast metal 3 extend from'the top of the coupling head where they lill the holes 3a, to the bott0m` thereof, where they merge with the' `filler beare thus rigidly andvsecurely tied togetherf 4 and the coupling head is securely and rigidly connected to the members 1 and 2. It@

will, of course, be understood that parts l, 2 and 3 are surrounded by suitable molds and during the casting or pouring operation suitable cores are used to form columns 3c. 'y

The coupling heads-3 are also'provided withk lateral openingsy 3d through which the cast filler extends, the sides of said head being formed, as shown in Fig. 4, the said heads having somewhat enlarged openings 3e at their inner and outer ends.

The compression member l, as shown in Fig. l, is formed centrally with a downwardly curved portion ordepression 1b and is connected at this portion to the central portion of the member 2 by a strut member 4. This strut member comprises a central bearing member 5, the central hub portion of which rests ontop of the web of member l, the side portions of which extend downward a short distance at each side of the flanges ofthe vmember l, a recess 5a being formed between the web 5b of member 5 and the top side of `.member l. rfhe top plate of column 4 is curved to correspond with the curve of the member l and is spaced slightly from the web portion thereof, the central hub portion of member 4 being in Contact with said. web. A plurality of outwardly Haring spaced holes 5C. are formed through the web 5* and downwardly flaring holes 4a alined with the holes 5C are also formed through the top plate of member 4, a corresponding number -of alined cylindrical holes being formed through the web of member. l. The members l, 4 and 5 are rigidly and permanently secured together by cast metal disposed in the recess 5a in the space between the web of member 1 and the top plateof member 4, which metal extends throughv the .holes 4, 5.and the holes formed'in the web of member l. The parts are thus' very securely tied to the top plate of member 4 by the metal extending through the alined holesv described.

As shown in Fig. 2, the member 4 is disposed inside of the channel member 2 and formed with achannel in itsbottom portion, the edges ofwhich contact with the web of thechannel member 2, a space thus being formed between said web and the bottom of saidl groove extending between the flanges ofthe. member An aperture 2 is centrally formed through the web 2 and the parts 4'and 2 permanently secured togetherby a. cast metal filler disposed be tween the saine and extending into the hole 2d. It will, of course, be understood, that the members l, 2, 4 and y5 are surrounded by suitable molds when the cast metal is poured thereinto.l `The members l and 2 are thus' very rigidly and permanently con- .nected at their centralportions.

From the above description it is seen that applicant has provided an exceedingly ruggedand rigid construction-of bolster and one having ample strength, and yet, which can be made comparatively `light. The use of the standard channels for the tension and compression members renders the bolster of inexpensive construction. It will be noted that the ends of the compression member l exert their stress against the ends of the tension member 2 andb the tension mem ber 2, likewise, exerts its stress against the ends of the compression member l. The parts are thus efficiently arrangedto withstand the stresses encountered and are so connected that there is vpractically no possibility of the same being deranged.

It will, of course, be understood that various changes may be made in the form, details and arrangement of the parts Without departing from the scope of applicants invention, which, generally stated, consists in the matter shown and described and set forth in the appended claims.

What is claimed is:

l. A bolster comprising compression and tension channel members having their flanges in superposed engagement at the 'ends thereof, a hollow coupling head in which the ends of said members are disposed, said head having spaced holes through the top thereof, and cast metal col- Aumns extending through said head from the top to the bottom thereof and through the holes in the top thereof.

2. The structure set forth in claim l, the holes in the top of the coupling head being outwardly flaring.

3. The structure set forth in claim l. and holes through the web of the tension member through which said columns extend.

4. The structure set forth in claim 3, the compression member' having holes through the web thereof in alinement with certain of the holes through the web of the tension member through which said columns extend.

5. A bolster having channel, compression and tension members having the flanges of their ends superposed, a hollow coupling head in which said ends are disposed having recesses 1n the bottom thereof, and a cast lmetal liller in said head surrounding the ends of said channel membersand extending into said recesses. v

6. The structure set forth in' rclaim l, said heads having recesses in the bottom thereofv in alinement with said holes in the top thereof into which said columns extend.

7. A bolster having channel, tension and compression members anda strut connecting the same at the central portions thereof and secured thereto by cast metal.

8. A bolster having a channel compression member, a central bearing plate having a portion spaced from the top thereofv and having flanges extending downwardly at each side thereof forming a space between it and the top and sidesof the channel, and a cast metal filler in said space securing said bearing plate to said channel member;

9. The structure `set forth in claim 8, and Lupwardly flaring holes through said central bearing into which said cast fillerextends.

10. The structure set forth in claim 8, said bolster having a tension member and a strut column extending from said compression channel member to said tension member, the bottom side of said strut column being spaced from the said channel member, and a filler of cast metal between said member and the channel, securing the said members together.

11. The structure set forth in claim 10, said strut column having downwardly flaring holes therethrough into which said filler eXt-ends.

12. A bolster having a channel compression member with the flanges thereofdirected downwardly, a central bearing member superposed on said channel and spaced therefrom, having upwardly flaring holes therethrough, a strut column having its upper side disposed between the flanges of said channel member and spaced from the web thereof and having downwardly flaring holes therethrough, and said channel having holes through the web thereof, the said holes in the central bearing, channel and strut column being in alinement, and a filler of cast metal in the space between the channel and central bearing and between the channel and strut column and extending through all of said holes.

1 3. A bolster having a channel tension member having upwardly directed flanges, a strut' column extending across said channel member and having a recess therein spaced from the web of said channel member, and a filler of cast metal disposed in said recess and securing said strut column to the tension member.

14. The structure set forth in claim 13, said tension channel member having' a hole through the web thereof into which said cast metal filler extends.

l5. A bolster comprising tension and comy pression members, both made from superposed standard channels, the ends of the compression member being disposed in notches formed in the tension member, the sides of said notches forming acute angles, the vertices of which are directed outwardly of said members. v

16. A bolster comprising tension and compression members formed of standard channels, and a hollow coupling head having the ends of said members disposed therein and secured thereto by cast metal fillers surrounding the ends of said members, the compression member terminating short ofthe end of the tension member.

'17. A bolster having a compression member formed of a standard channel with the flanges turned downwardly, said compression member having a central downwardly curved portion in both its web and flange portions. f

18. A bolster having compression and tension members having their ends in engagement, a hollow coupling head in which said ends are disposed, said head having a flaring opening at its inner end, and a cast metal filler therein surrounding the ends of said EDWIN C.V WASHBURN. 

